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18 MnMoNi 5-5

EU EN 18MnMoNi5-5 承压钢锻件 - 第2部分:规定高温性能的铁素体和马氏体钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 18MnMoNi5-5 / 18 MnMoNi 5-5
Category Grade Standard Region/Area Standard Content
Metals 18 MnMoNi 5-5 EN 10222-2 EU 承压钢锻件 - 第2部分:规定高温性能的铁素体和马氏体钢

Chemical composition(mass fraction)(wt.%) of the 18 MnMoNi 5-5

Element Min Max Similar
V - 0.0300 -
Si - 0.4000 -
S - 0.0150 -
P - 0.0250 -
Ni 0.5000 0.8000 -
Nb - 0.0100 -
Mo 0.4500 0.5500 -
Mn 1.1500 1.5500 -
Cu - 0.3000 -
Cr - 0.3000 -
C - 0.2000 -

Mechanical Properties of steel grade 18 MnMoNi 5-5

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
476 (≥) 475 (≥) 43 41 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade 18 MnMoNi 5-5

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
22 - -     0.31 -  
687 111 - 44.3 121   -  
184 - 11 21.2   234 343

Heat Treatment of steel grade 18 MnMoNi 5-5

Heat treated : 1876°C - 1235°C

Technological Curves of steel grade 18 MnMoNi 5-5

Cross Reference Table (Equivalent Grade) of 18 MnMoNi 5-5

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